/* Core Application Styles (Glassmorphism E-Commerce Aesthetic) */

/* Glassmorphism Global Panels */
.glass-panel {
    background: var(--glass-bg) !important;
    backdrop-filter: blur(16px) saturate(180%) !important;
    -webkit-backdrop-filter: blur(16px) saturate(180%) !important;
    border: 1px solid var(--glass-border) !important;
    box-shadow: var(--glass-shadow) !important;
    color: var(--md-sys-color-on-surface) !important;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}
.glass-panel:hover {
    box-shadow: var(--glass-shadow), var(--glass-glow) !important;
    border-color: var(--glass-border-hover) !important;
}

/* Universal Text & Contrast Rules for Light and Dark Modes */
body, h1, h2, h3, h4, h5, h6, .h1, .h2, .h3, .h4, .h5, .h6, p, label, span, div {
    color: var(--md-sys-color-on-surface);
}

/* Base Surfaces & Containers */
.md-surface {
    background: var(--glass-bg);
    backdrop-filter: blur(16px) saturate(180%);
    -webkit-backdrop-filter: blur(16px) saturate(180%);
    color: var(--md-sys-color-on-surface);
}

/* Material Glass Cards */
.md-card {
    background: var(--glass-bg);
    backdrop-filter: blur(14px) saturate(160%);
    -webkit-backdrop-filter: blur(14px) saturate(160%);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    box-shadow: var(--glass-shadow);
    color: var(--md-sys-color-on-surface);
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.3s ease, border-color 0.3s ease, background 0.3s ease;
    overflow: hidden;
}
.md-card:hover {
    transform: translateY(-6px) scale(1.015);
    box-shadow: var(--glass-shadow), var(--glass-glow);
    border-color: var(--glass-border-hover);
    background: var(--glass-bg-hover);
}

/* Form Controls & Dropdowns High Contrast */
.form-select, .form-control {
    background-color: var(--glass-bg) !important;
    color: var(--md-sys-color-on-surface) !important;
    border: 1px solid var(--glass-border) !important;
}
.form-select option {
    background-color: var(--md-sys-color-background) !important;
    color: var(--md-sys-color-on-background) !important;
}
.form-check-label {
    color: var(--md-sys-color-on-surface) !important;
}

/* Dropdown Menus */
.dropdown-menu {
    background: var(--glass-bg) !important;
    backdrop-filter: blur(20px) !important;
    border: 1px solid var(--glass-border) !important;
}
.dropdown-item {
    color: var(--md-sys-color-on-surface) !important;
}
.dropdown-item:hover, .dropdown-item:focus {
    background-color: var(--md-sys-color-surface-variant) !important;
    color: var(--md-sys-color-primary) !important;
}

/* Sidebar List Items */
.list-group-item {
    background-color: transparent !important;
    color: var(--md-sys-color-on-surface) !important;
}
.list-group-item:hover {
    background-color: var(--md-sys-color-surface-variant) !important;
    color: var(--md-sys-color-primary) !important;
}

/* Tables High Contrast & Glass Overrides */
.table {
    --bs-table-bg: transparent !important;
    --bs-table-accent-bg: transparent !important;
    --bs-table-striped-bg: transparent !important;
    --bs-table-hover-bg: var(--glass-bg-hover) !important;
    --bs-table-color: var(--md-sys-color-on-surface) !important;
    background-color: transparent !important;
    color: var(--md-sys-color-on-surface) !important;
}
.table > :not(caption) > * > * {
    background-color: transparent !important;
    color: var(--md-sys-color-on-surface) !important;
    border-bottom: 1px solid var(--glass-border) !important;
}
.table thead th {
    color: var(--md-sys-color-primary) !important;
    font-weight: 700 !important;
    border-bottom: 2px solid var(--glass-border) !important;
    background-color: transparent !important;
}
.table-hover > tbody > tr:hover > * {
    background-color: var(--glass-bg-hover) !important;
    color: var(--md-sys-color-on-surface) !important;
}

/* Buttons */
.btn-primary-custom {
    background: linear-gradient(135deg, var(--md-sys-color-primary) 0%, #4F378B 100%);
    color: var(--md-sys-color-on-primary) !important;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 10px;
    padding: 10px 24px;
    font-weight: 500;
    box-shadow: 0 4px 15px rgba(103, 80, 164, 0.25);
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}
.btn-primary-custom:hover, .btn-primary-custom:focus {
    background: linear-gradient(135deg, var(--md-sys-color-primary) 0%, #381E72 100%);
    color: var(--md-sys-color-on-primary) !important;
    box-shadow: 0 6px 20px rgba(103, 80, 164, 0.4), var(--glass-glow);
    transform: translateY(-2px);
}
.btn-primary-custom:active {
    transform: scale(0.97);
}

.btn-outline-custom {
    color: var(--md-sys-color-primary) !important;
    border: 1px solid var(--glass-border);
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 10px;
    padding: 10px 24px;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}
.btn-outline-custom:hover {
    background-color: var(--md-sys-color-primary-container);
    color: var(--md-sys-color-on-primary-container) !important;
    border-color: var(--md-sys-color-primary);
    transform: translateY(-2px);
    box-shadow: var(--glass-shadow);
}

.btn-icon {
    border-radius: 50%;
    width: 40px;
    height: 40px;
    padding: 8px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--md-sys-color-on-surface-variant);
    transition: all 0.25s ease;
    border: 1px solid transparent;
    background: transparent;
}
.btn-icon:hover {
    background: var(--glass-bg-hover);
    color: var(--md-sys-color-primary);
    border-color: var(--glass-border);
    transform: scale(1.08);
}

/* Material Inputs (Floating Labels & Underlines) */
.form-floating > .form-control {
    background-color: var(--glass-bg);
    backdrop-filter: blur(8px);
    border: 1px solid var(--glass-border);
    border-radius: 10px;
    color: var(--md-sys-color-on-surface) !important;
    transition: all 0.25s ease;
}
.form-floating > .form-control:focus {
    box-shadow: 0 0 0 3px rgba(103, 80, 164, 0.2);
    border-color: var(--md-sys-color-primary);
    background-color: var(--glass-bg-hover);
}
.form-floating > label {
    color: var(--md-sys-color-on-surface-variant);
}
.form-floating > .form-control:focus ~ label {
    color: var(--md-sys-color-primary);
}

/* Badges & Chips */
.md-chip {
    display: inline-flex;
    align-items: center;
    padding: 5px 14px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 500;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    color: var(--md-sys-color-on-surface) !important;
    border: 1px solid var(--glass-border);
    box-shadow: 0 2px 8px rgba(0,0,0,0.04);
    transition: all 0.25s ease;
}
.md-chip.active {
    background-color: var(--md-sys-color-primary-container);
    color: var(--md-sys-color-on-primary-container) !important;
    border-color: transparent;
}
.md-chip .material-icons {
    font-size: 16px;
    margin-right: 4px;
}

/* Modals */
.modal-content.glass-modal {
    background: var(--glass-bg) !important;
    backdrop-filter: blur(24px) saturate(200%) !important;
    -webkit-backdrop-filter: blur(24px) saturate(200%) !important;
    border: 1px solid var(--glass-border) !important;
    border-radius: 24px;
    color: var(--md-sys-color-on-surface) !important;
    box-shadow: 0 20px 50px rgba(0,0,0,0.3) !important;
}
.modal-header, .modal-footer {
    border-color: var(--glass-border) !important;
}

/* Navbar */
.navbar-custom {
    background: var(--glass-bg) !important;
    backdrop-filter: blur(20px) saturate(180%) !important;
    -webkit-backdrop-filter: blur(20px) saturate(180%) !important;
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
    z-index: 1030;
    
    /* Floating Styles */
    position: fixed !important;
    top: 15px;
    left: 15px;
    right: 15px;
    border-radius: 30px;
    transition: transform 0.3s ease-in-out, top 0.3s ease-in-out;
}

body:has(.navbar-custom) {
    padding-top: 90px;
}

.navbar-hidden {
    transform: translateY(-150%);
}

.hide-dropdown-arrow::after {
    display: none !important;
}

.search-bar-container {
    flex-grow: 1;
    max-width: 600px;
    margin: 0 20px;
}
.search-input-wrapper {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    display: flex;
    align-items: center;
    padding: 4px 14px;
    transition: all 0.25s ease;
}
.search-input-wrapper:focus-within {
    background: var(--glass-bg-hover);
    border-color: var(--md-sys-color-primary);
    box-shadow: 0 0 15px rgba(103, 80, 164, 0.25);
}
.search-input-wrapper input {
    border: none;
    background: transparent;
    color: var(--md-sys-color-on-surface) !important;
    width: 100%;
    padding: 8px;
    outline: none;
}

/* Book Grid layout */
.book-grid {
    display: grid;
    grid-template-columns: repeat(1, 1fr);
    gap: 24px;
}
@media (min-width: 480px) { .book-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; } }
@media (min-width: 768px) { .book-grid { grid-template-columns: repeat(3, 1fr); gap: 24px; } }
@media (min-width: 1200px) { .book-grid { grid-template-columns: repeat(4, 1fr); gap: 24px; } }
@media (min-width: 1400px) { .book-grid { grid-template-columns: repeat(5, 1fr); gap: 24px; } }

/* Book Card specifics */
.book-cover {
    width: 100%;
    height: auto;
    object-fit: contain; /* Show full image */
    padding: 0 !important;
    background-color: transparent !important;
    border-radius: var(--md-sys-shape-corner-medium) var(--md-sys-shape-corner-medium) 0 0;
    transition: transform 0.3s ease;
}
.md-card:hover .book-cover {
    transform: scale(1.04);
}
.book-title {
    font-size: 15px;
    font-weight: 600;
    line-height: 1.4;
    color: var(--md-sys-color-on-surface) !important;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 4px;
}
.book-author {
    font-size: 13px;
    color: var(--md-sys-color-on-surface-variant) !important;
    margin-bottom: 8px;
}
.book-rating {
    font-size: 13px;
    color: #F57C00;
    display: flex;
    align-items: center;
    gap: 4px;
}

/* Sidebar filter */
.filter-sidebar {
    width: 250px;
    flex-shrink: 0;
    padding: 20px;
    background: var(--glass-bg);
    backdrop-filter: blur(14px) saturate(160%);
    -webkit-backdrop-filter: blur(14px) saturate(160%);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    box-shadow: var(--glass-shadow);
}
.filter-section-title {
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--md-sys-color-primary) !important;
    margin-bottom: 12px;
}

/* Login Page Splitting */
.login-split-container {
    min-height: 100vh;
    display: flex;
}
.login-brand-side {
    flex: 1;
    background: linear-gradient(135deg, rgba(103, 80, 164, 0.9) 0%, rgba(125, 82, 96, 0.9) 100%);
    backdrop-filter: blur(10px);
    color: white;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 40px;
    text-align: center;
}
.login-form-side {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px;
}
.login-card {
    width: 100%;
    max-width: 450px;
    padding: 40px;
    border-radius: 24px !important;
}

/* --- Mobile Responsiveness & Glass Drawers --- */
@media (max-width: 991.98px) {
    .search-bar-container {
        margin: 10px 0;
        max-width: 100%;
    }
    
    .admin-sidebar {
        position: fixed !important;
        top: 0;
        left: -280px;
        transition: left 0.3s cubic-bezier(0.16, 1, 0.3, 1);
        z-index: 1050 !important;
        box-shadow: 4px 0 25px rgba(0,0,0,0.3);
        background: var(--glass-bg) !important;
        backdrop-filter: blur(20px) !important;
    }
    .admin-sidebar.show-sidebar {
        left: 0 !important;
    }
    
    .admin-backdrop {
        position: fixed;
        top: 0; left: 0; right: 0; bottom: 0;
        background: rgba(0,0,0,0.5);
        z-index: 1040;
        display: none;
        backdrop-filter: blur(4px);
    }
    .admin-backdrop.show-backdrop {
        display: block !important;
    }
}

@media (max-width: 767.98px) {
    .login-split-container {
        flex-direction: column;
    }
    .login-brand-side {
        flex: 0 0 auto;
        padding: 30px 20px;
    }
    .login-form-side {
        padding: 20px 15px;
    }
    .login-card {
        padding: 24px 16px;
    }
    .book-cover {
        width: 100%;
        height: auto;
        object-fit: contain;
        padding: 0 !important;
        background-color: transparent !important;
    }
    .btn-primary-custom, .btn-outline-custom {
        padding: 8px 16px;
        font-size: 14px;
    }
}

@media (max-width: 479.98px) {
    .book-grid {
        grid-template-columns: repeat(1, 1fr);
    }
    .book-cover {
        width: 100%;
        height: auto;
        object-fit: contain;
        padding: 0 !important;
        background-color: transparent !important;
    }
}